Flat Roofing in Cranleigh

Wey Valley Roofing is rated 5.0 out of 5 from 9 Google reviews, and the work behind that is flat roofs on Cranleigh extensions, garages, dormers and porches.

Scott has spent more than 36 years on Surrey roofs, still answers the phone himself day, night or weekend, and sends his own roofers rather than subcontractors, so the roofer in Cranleigh who surveys your flat roof is the one standing behind that written guarantee.

Call 07428 300474 for a free survey and an honest fixed price in writing, with no obligation.

Flat Roofing Systems

A flat roof is not really flat, and that's the first thing worth saying. It's built with a fall so water runs to an outlet instead of sitting in a pool. We work to BS 6229 on flat roofs, which covers falls, drainage and how the layers are put together. Get that wrong and no membrane on earth will save it.

EPDM rubber

EPDM is a single sheet of rubber, usually laid in one piece on a domestic extension or garage. There are no seams across the field of the roof, so there's very little to fail. It stays flexible in cold weather and doesn't mind a Surrey winter. On a small back extension off Knowle Lane, a single sheet often covers the whole deck.

GRP fibreglass

GRP is laid wet and cures into one solid skin. It suits balconies, dormers and any roof that gets walked on. Trims are bonded in rather than clipped on, so edges and upstands come out neat and hard. It needs dry, settled weather to lay properly, and we'll say so rather than rush it.

Felt and torch-on

Torch-on and built-up felt still has its place, particularly on larger decks and older garage roofs where the detailing is awkward. Modern high-performance felt is a different animal to the thin stuff people remember peeling off in the eighties. We lay it in layers, properly bonded, with the upstands and drips formed rather than fudged. Felt isn't a separate trade to us, it's one of the systems inside flat roofing.

Flat Roof Installation in Cranleigh

Most flat roof work we do in Cranleigh is on extensions, garages, porches and dormers. The survey comes first and it's free. We'll get up there, look at the deck, check the falls and the outlet, and tell you what's actually needed.

The deck underneath

New membrane over a soft deck is money thrown away. We lift and check. If the boards are spongy or the joists have taken water, that gets replaced before anything waterproof goes down. We'd rather have the awkward conversation on day one than come back to a stain on your ceiling.

Falls, outlets and rainwater

Rainwater outlets and gutters are sized to BS EN 12056, not guessed at. A garage roof that drains into one undersized outlet will back up in a heavy August downpour. We look at where the water goes once it leaves the roof, because that's usually where the real problem started.

Flat roofing across the wider area

Whether you need flat roofing in Cranleigh or a new roof replacement in Cranleigh, we cover the whole area, and the same flat roofing systems and standards apply either way. Looking for someone doing flat roof work near you around Cranleigh, from the High Street out towards Ewhurst Road? Our own roofers are working across this stretch of Surrey most weeks, so getting to you isn't a problem.

Flat Roof Repairs for Cranleigh Homes

Not every flat roof needs replacing. Plenty of the calls we take are one failed detail, one split at an upstand, or a blocked outlet doing damage nobody spotted. If a repair will hold, we'll tell you that and quote for the repair.

Where flat roofs actually leak

Rarely in the middle. It's the edges, the joints, the upstand where the flat roof meets the house wall, and the flashing above it. Lead work gets done to Lead Sheet Association guidance, because a badly dressed apron will let water in behind a perfectly good membrane. We chase the leak back to its source rather than smearing sealant on the wet patch.

Ponding, blisters and splits

Standing water that never clears is a sign the fall has gone, often because the deck has sagged. Blisters mean moisture trapped under the layers. Splits usually show up at a stress point where the roof has moved and the covering couldn't. We photograph what we find and show you, drone shots included where the roof is hard to reach safely.

Repairs beyond Cranleigh

Whether you need flat roofing in Cranleigh or flat roofing in Godalming, we cover the whole area with the same people and the same written guarantee.

Commercial and Domestic Flat Roofing

Houses, garages, extensions, small units and outbuildings. The systems overlap, the detailing differs, and the scale changes how we programme the work.

Domestic extensions and garages

This is the bread and butter. Single-storey rear extensions, garage roofs, bay tops and porch canopies. On older detached garages around the Horsham Road end of the village we still find asbestos-cement sheeting. We assess it, tell you what it is, and advise the safe compliant route under the Control of Asbestos Regulations 2012. We don't remove licensed material ourselves and we won't pretend otherwise.

Small commercial buildings

On a workshop or a small unit, access, working hours and keeping the place open matter as much as the membrane. We plan the phasing so you're not shut for a week. Site gets swept and cleared at the end of each day, not just at the end of the job.

Coverage across Surrey

Whether you need flat roofing in Cranleigh or flat roofing services Woking, we cover the whole area, and Scott quotes the job himself either way.

Flat Roof Replacement and Flat Roofing Materials

When a roof has gone past repair, replacement is the honest answer. Choosing the covering is the easy part. Building it right underneath is the part that decides how long it lasts.

When replacement is the right call

Several failed patches, a soft deck, no usable fall, or water tracking in from more than one point. At that stage patching is just buying weeks. We'll set out both options in writing with a fixed price, and there's no charge and no obligation for the quote.

Choosing the covering

• EPDM: seamless on smaller roofs, flexible, low maintenance.
• GRP: hard, walkable, ideal for balconies and dormers.
• Felt and torch-on: robust and adaptable on larger or awkward decks.

We'll recommend one and explain why, based on the size, the access, the fall and whether anyone will walk on it. You won't get a coating pushed on you as a shortcut, because we don't sell them that way.

Fixings and wind

Fixing and wind uplift is covered by BS 5534, and it matters more on exposed roofs than people expect. Perimeter fixings and edge trims take the worst of it. That's where a cheap flat roof lifts first.

Flat Roof Waterproofing and Insulation

Waterproofing and insulation are one job, not two. Put insulation in the wrong place and you'll get condensation forming inside the build-up, which rots a deck quietly from above.

Warm roof upgrades

A warm roof puts the insulation above the deck and the membrane above that. It keeps the structure warm and the dew point out of the timber. It's the build-up we recommend on most replacements. If the job counts as a re-roof, Approved Document L's 25% rule comes into it, and we handle that as part of the quote rather than springing it on you halfway through.

Ventilation and condensation

Where a cold roof build-up stays, ventilation is designed to BS 5250 so moisture has somewhere to go. Blocked eaves and stuffed insulation cause more flat roof failures than bad membrane. We check it while we're up there.

Living with it afterwards

Flat roofs like being looked at once a year. Clear the outlet, brush off leaves and moss, check the upstands. We clear moss by hand and soft wash at low pressure, and we never pressure wash a roof. If something isn't right within 25 years of us doing the work, we come back and put it right.